Comet Browser is an AI-powered web browser built by Perplexity, the company known for its AI search engine. It launched in limited release on July 9, 2025, and was made free for everyone in October 2025. Its defining trait is that the AI assistant lives inside the browser rather than alongside it. Comet grasps context across the page you are viewing, the tabs you have open, and your browsing history, so you can ask it to summarize, compare, or research in plain language. It goes a step further into acting on your behalf — filling in forms, drafting emails, helping you post comments — which puts it in a different role from a traditional browser that simply hands you a list of links.
Key Features
- An assistant that understands pages and tabs: The sidebar assistant answers with the current page and your open tabs as context. You can ask it to summarize an article or compare conditions across several product pages without pasting URLs again
- Task execution in natural language (agentic capabilities): You can ask for work that involves acting on the screen, not just reading it ─ “fill in this form,” “draft an email with this content.” Routine work that would take a person several clicks can be handed over in one instruction
- Perplexity search built into the browser: You can run a Perplexity search straight from the address bar and get answers with source links. The loop of searching, opening, and summarizing finishes in a single window
- Cross-tab and cross-history reference: Even a vague instruction like “that page I was looking at earlier” can be resolved using your history and open tabs. This suits research work where the references are scattered
- Background assistants: Tasks you delegate can run in the background, letting several jobs proceed in parallel. Useful when you want to move on without waiting
- A familiar Chromium-based experience: Because it follows the conventions of other Chromium browsers, including extensions and bookmarks, you can migrate without straying far from how you already work
Pricing
| Plan | Price | Highlights |
|---|---|---|
| Comet (Free) | $0 | The browser itself and basic assistant features at no cost. Advanced search is capped per day |
| Comet Plus | $5/month | Adds access to premium articles from partner publishers. Included with Pro and Max |
| Perplexity Pro | $20/month (cheaper billed annually) | Unlocks Perplexity’s advanced search, model selection, and other higher-tier features |
| Perplexity Max | $200/month | Substantially expanded usage limits and priority access to new features |
| Enterprise | Contact sales | Organization-level administration and per-seat contracts |
Pricing is current as of August 2026. Please check the official site for the latest details.
Pros & Cons
✅ Pros
- The browser itself is free, so you can try the AI browser concept without spending anything
- You can give instructions based on the page and tabs in front of you, with no copy-pasting or re-entering URLs
- Search, summarization, comparison, and drafting all finish in one window, cutting down the back-and-forth of research
- Being Chromium-based, it feels close to existing browsers, so the learning curve for switching is small
- Answers come with source links, so you can follow the references and verify them yourself
⚠️ Cons
- Because the AI handles the context of what you browse and do, opening work data or sensitive pages calls for a privacy judgment
- Agentic task execution is not universal; complex forms or sites with custom interfaces may not behave as intended
- The free plan caps advanced search usage, so serious use tends to assume Pro or above
- Switching browsers wholesale takes effort to migrate settings and profiles from your existing one
- AI responses can contain errors, so summaries and comparisons should not be taken at face value
Comparison with Similar Services
| Criteria | Comet Browser | Arc / Dia (The Browser Company) | Microsoft Edge (Copilot) | Google Chrome (Gemini) |
|---|---|---|---|---|
| Provider | Perplexity | The Browser Company | Microsoft | |
| Base | Chromium | Chromium | Chromium | Chromium |
| Role of AI | Core feature for search, summarization, and task execution | Integrated around conversation and page understanding | Integrated as a Copilot sidebar | Integrated as a Gemini assist feature |
| Task execution | Supported (form filling, drafting, etc.) | Limited | Limited | Limited |
| Search integration | Perplexity search built in | Centered on existing search engines | Centered on Bing | Centered on Google Search |
| Cost | Browser is free | Free | Free | Free |
Who Is It For
- People who routinely open many tabs for research and then have to reconcile the contents
- Anyone who wants to save time by delegating article summaries and product comparisons to AI
- Existing Perplexity search users who want to extend it across their whole browsing experience
- People who want to cut the number of steps in routine web tasks such as form filling and email drafting
- Anyone curious to try the emerging AI browser category within a free tier
Summary
Comet Browser is Perplexity’s answer to the question of what a browser should be: not a tool for searching and opening links, but a partner that understands context and carries work forward. Combining cross-tab and cross-history understanding with task execution such as form filling and drafting, it visibly reduces the number of steps in research-heavy work. At the same time, the privacy judgment inherent in letting AI handle what you browse, and the hit-or-miss nature of agentic actions, remain. Since the browser itself is free to try, a practical approach is to adopt it as a secondary browser for research first, then consider making it your main one once you have a feel for it.